This technique applies much more widely than personal privacy. It's exactly how propagandists/trolls work: Keep the seekers of truth busy. In the case of propaganda, the roles are reversed, of course; the seekers are the good guys, but the trolls' method is the same.
HN is particularly susceptible to it. Its method for dealing with bad information is that honest users will correct it with good information - the old, generally good idea that the answer to bad speech is more speech. Unfortunately, that's exactly what the trolls want, to keep the seekers of truth busy and not addressing the real issues. And the contest is highly asymmetrical: anyone can post a falsehood in seconds; it can take hours or more for the honest person to find the truth of it. The HN approach assumes a pact of good faith; propagandists take advantage of that pact. HN also forbids calling someone a troll, so the guidelines create for them, in a way, a safe, protected playground. I haven't looked at the front page discussion about Chinese foreign policy today, but I bet I know what I'll find.
The solutions aren't easy; this technique wasn't invented by social media end users, but long before the Internet by intelligence professionals.